Polymorphic phase behaviour of cardiolipin from bovine heart and from Bacillus subtilis as detected by 31P-NMR and freeze-fracture techniques. Effects of Ca2+, Mg2+, Ba2+ and temperature.
The structures formed by aqueous dispersions of cardiolipin isolated from bovine heart and B. subtilis have been studied by 31P-NMR and freeze-fracture electron microscopy. The sodium salts of both cardiolipins form bilayers. The Ca2+, Mg2+ and Ba2+ salts undergo well-defined bilayer leads to hexagonal (HII) transitions, the temperature of which is dependent on the cation involved and the fatty acid composition of the cardiolipin.
D000818:Animals; D001412:Bacillus subtilis / Q000032:analysis*; D001464:Barium; D002118:Calcium; D002308:Cardiolipins; D002417:Cattle; D005614:Freeze Fracturing; D008051:Lipid Bilayers; D008274:Magnesium; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D009206:Myocardium / Q000032:analysis*; D013045:Species Specificity; D013696:Temperature
D002308:Cardiolipins; D008051:Lipid Bilayers; D001464:Barium; D008274:Magnesium; D002118:Calcium